Spring structure.



2 SHEETS-SHEET 1.

y PATBNTED JAN. s, 1907. E. 0. sToTTs'.

SPR STRUCTURE.

APPLI FILED MAR. 3, 1.906.

/I H y f 2 Wd A n PAT'ETED JAN. s, 1907. Rasmus. l A SPRING STRUCTURE.

APP'LIoATIoN FILED mma, 1906,

2 sums-SHEET z.

Figi". Fiyi y, Lf- I x9 A j #wf/album., l-m

` U NrrED VS'IPJPES"lvlA'l-lfN'l I OFFICE' EDWARD o. sro'rrs, or CHICAGO.

1LL1No1s,'Ass`IGNoR, Br MEsNE ASSIGNMENTS. To vEN'rlLATED CUSHION AND SPRING COMPANY,

or CHICAGO, iLLiNois, lA CORPORATION.

SPRING STRUCTURE- A No. 840.522.

' Patented Jan. 8,' 1,907.

Application filed March 3, 1906. Serial No. 804.125.

To all whom it may concern:

Beit known that l, EDWARD O. S'ror'rs, a citizen of the United States of America, and

` a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im rovements in Spring Structures, of which the following is a specification.

j The main objectsof this invention are to 1o provide an improved spring structure particularly) adapted for the cushions in seats of automo iles and other cars or carriages where thesprings are likely to be subjected to sudden and `violent jarring, to provide an improved arrangement for connecting "toget er the component parts o'r' such structure, and to provide a cushion structure in which the resistance of one set of springs is reinforced by a second set after the first set zo has yielded to a certain extent, thus ada ting the device to use for ersons of eit er heavy or li ht weight. 'ese objects are accomplishe by the device shown in the accompanying drawings, in which `Figure 1 1s a to plan of a cushion-spring constructed accor gto this invention. Fig. 2 isan end elevation ofthe same. Fig. 3 is a plan showing the structure'of the bottom of` the same, some of the arts which would a 3o pear in the background) being omitted fort e sake of clearness. l Fi s. 4 and 5 show a form of attaching-clipwhic is used for connecting adjacent wires of the structure, the two views showing diiere'nt applications of the same clip.

In the construction shown in the drawin s I two sets oi furniture-springs of respective y diHerent height are used. The first set consists of long springs. 1, spaced apart and ar-` 4o' rangedinintersectmg rows and columns. The springs 2 ofthe second set are arranged in staggered relation With the springs 1 of the first 'set and occupy the spaces between adj acent springs of the first set.

bottom convolution of each of said springs is twisted about the adjacent part of such convolution to form a substantially circular base for the` spring to restu on, and the bases of adjacent springs are astened together by 5o means of a wrapping 3, oi sheet metal. The s rings are so space that the base of each of t e springs of 'i hch is secured to the springs by clips 5 in a low the ltop of the set of lo The end of the j the second Aset touches and is secured to those of the four adjacent springs of the iirst set.

Aborder-frame 4 of Wire, extends around the outside of the fi st set of springs 1 and is fastened to the base of each of the outer springs by means Oia Wire-clip 5. These clips are applied as shown in Fig. 5. The Vborderwire 1s arra ed to lie directly under the adjacent part o the base of the s ring,' so as to give support to the same. vpluraht of parallel cross-wires 6 extend along each o the rows of joints between the springs 1 and 2, so as to support both sets o springs. These cross-wires are fastened to eac lofthe springs 1 by means of wire-clips 7. The cli s 5' and 7 are substantially alike, but are app ied in a u slightly diiierent manner, as will be seen from Figs. 4 and 5. It will be seen that the base convolutions of the springs, the base-frame 4,

and the cross-wire, together with the fastenings Of'each to the other, form arigid base for the cushion. This base is, howevergall constructed of resilient wire and is therefore ca able'of yielding toa certain extent.

lhe tops oi the outer springs 1 of the first set are connected together by a border-wire 8, similar to the border-wire 4 of the base and similar manner. The top convolution of each ofthe inner springs of the first set is con nected to each of the adjacent springs of said first set by means of short helical springs 9, vthus form' a connected yielding top for su orting t e top of the cushion. i l,

he tops of the shorter'springs 2 are connected together by a -wire trame 10, which in the present instance consists of a border-wire and one cross-wire. 'The top frame 10 of the set of short springs 2 is connected to the upper end of each spring oi said set by means of a sheet-metal clip 11. The top frame 10 of the set of short springs 2 is considerablybe i, springs 1., Q9 5 In operation, when usedy a erage weight, the lsprings l1 or inaril support the Weight uponlthe cushion; but 1n case a of a jar, as when the vehicle passes over ar A rough road, the yielding of the springs 1 is at roo `timessuiiicient to bring the `Weight of the.

passenger upon-the short springs 2, which then assist the long slprings in'resisting the jar, thereby greatly re ievingthe springing of u erson of avv-` 4 the cushion and adding to the comfort of the passenger.- When used by a heavy person, the weight is to a considerable extent. supported by and distributed over the inner cushion formed by the connected structure of the shorter springs; The longer springs, which aid in such support, also rovide an upper part of the cushion suitab e for comfortably supporting a person of light weight- Without bringing into use the stiffer structure of the short s rings.

What I c aim as my invention, and desire to secure by Letters Patent, is`

1. In a spring-cushion, the combination of plurality of rows, a second set of spiral springs of less height than those of the iirst set, and located in the spaces between the sprin s of the first set, the bottom convolutions o the springs of the first set being in contact with and secured to the bottom convolutions of adjacent springs of the .second set, anda plurality of braces extending alongsaid rows and fastened to said bottom convolutions to form a supporting-base for said springs.

A' spring-cushion comprising a bottom frame, a set of springs mounted thereon, a top yieldingly supported by -said springs, a

- second set of springs mounted on the bottom frame and being shorter than the first set, and

- a third frame of stiff material connecting said second set and being movable relatively of the other frames, said springs and frames be-- ing so disposed as to ermit the top to be depressed a eonsiderab e distance without resistance by said'second set and to cause such resistance when said top is further depressed.

, 4. In a spring-cushion, the combination of a Wire bottom frame, a set of spiral metal springs mounted on said frame, a second set of sprin s shorter than the iirst and mounted on said ottom frame in staggered relation to the springs in the iirst set, a. wire borderame connecting the to of the first set, a plura extending transversely betweem`v the tops of adjacent springs in the iirst set;y and a wire frame connecting kthe tops of the s rings in the second set and bracing each om the others, the springs in the second set being s of the outer spring ity of helical springs considerably shorter than those of the iirst set and the top frame of the springs in the second set being disposed below and ,infparallel relation to the tops of the springs o the first set.

set, arranged in sta engage and support the top on said -in said first set, and a wire -posed below 'and in 5. In a spring-cushion, the combination of a plurality of spiral ture-springs having substantially circular bases and being arranged in a plurality of rows, and alternate springs being of less height than the others, t `e bottom coils of the springs in each row beingin contact with each other and with those in the adjacent rows, clips connectin the bottom coil of each spring with those di the adjacent springs, and a plurality of braces extendin ,along said rows and fastened to said coiIs to form a supporting-base frame for said springs. l

6. The combination of a set of spiral furniture-springs, spaced apart and arranged in rows, a second set of furniture-spr' Us of less height than those ofthe iirst setfalriiia located in the spaces between the springs of said first set, the bottom convolution of each of said springs being rigidly fastened to the bottom convolution ofv each of the adjacent springs of the other set7 and a system of wire bracing -extending across said bottom convolutions secured thereto and cooperating therewith `to' form a stiff supporting-base of wire netn work.

7. The combination of a set of spiral furniture-springs spaced apart and arranged in rows and columns, a second set of furnituresprings of less height than those of the iirst gered relation therewith, e spaces between the springs of said rst set, the bottom convolution of each of said springs being ri idly fastened to the bottom convolution o each of the adjacent springs of the other set, a system of Wire bracing extending across said bottom convolutions and secured thereto to form a supporting-base for the structure, and a stii frame of wire connecting the tops of the springs in said second set and ada ted to first set rst set have been and located in t when the springs in said compressed.

v8. In a spring-cushion, the combination of a wire bottom frame, a set of furnituresprings mounted on said frame, being spaced apart and arranged in intersecting rows and columns, a second set of springs shorter than the rst and mounted onsaid bottom in staggered relation to the springs in said irst set, a wire border-frame connecting the tops of the-outer springs of said iirst set, a pluraiity of helicalsprings extending transversely between the tops of adjacent springs frame connectin the tops of the springs in said second set an bracing each from the others, the springs in said second set being considerably shorter than those of the first set and the top frame of the springsin said second set being disarallel relation to the tops ofthe springs ci) the first set.

In a spring-cushion, the combination of a plurality of spiral springs arranged in a plup rality of rows, a second set of s :Erst set, the spnngs iral springs of less heiglllit than those of the locatfdint espacesbetweenthe springs of the of said second set being of fuiste-conical shape with their bases downward and secured to and in contact with the bottom convolutions of adjacent springs of the second set, and coperating to form a wire-network base.

10. In aspring-cushion, the combination of a plurality of spiral springs, a top frame yieldlngly supported thereby, a pluralit `of s iral sprin s of less height than those o the st set, an each having its bottom convol tion extending into the space bounded by the peri hery of the bottom convolution of one' of t e spri s of the first set, the bottom convolutions o both sets being secured together and cooperating to form a wire-network base, said springs and top being so disposed as to permit the top to be depressed a considerable distance without resistance by the second set and to cause such resistance when said top is,

- further depressed.

1 l. A spring-cushion comprising a bottom frame,a set of springs mounted thereon, a,

supported by said springs, a.

top yieldingl i7 springs mounted on the botsecondset o rst set, and

tom frame and beng'shorter tbanft'll first set, and a frame mounted on the upper ends 3o of said second set and located below and free from said top, and be' free from any restraining connection wit the bottom framev except through its connection with saldshort springs. 35

12. A spring-cushion comprising a bottom frame, a set of springs mounted thereon, a top yieldingly supported by said springs, a second set of s rin s mounted 'on the bottom frame and bel s orter than the first set 4Q and an interme 'ate frame of stiff material j connecting the upper ends of said second set, said springs and frames being so disposed as to permit the upper frame to be depressed a considerable distance without resistance by 45 said `second set and to cause such resistance through contact between said upperand intermediatev frames when said upper frame is P. W. Hoon. 

